EP 1284637 B1 20040623 - METHOD AND DEVICE FOR DETERMINING THE CORNEA THICKNESS OF AN EYE
Title (en)
METHOD AND DEVICE FOR DETERMINING THE CORNEA THICKNESS OF AN EYE
Title (de)
VERFAHREN UND VORRICHTUNGSANORDNUNG ZUR BESTIMMUNG DER HORNHAUTDICKE EINES AUGES
Title (fr)
PROCEDE ET DISPOSITIF POUR DETERMINER L'EPAISSEUR DE LA CORNEE D'UN OEIL
Publication
Application
Priority
CH 0100226 W 20010409
Abstract (en)
[origin: WO02080760A1] The invention relates to a method and to a device for determining the cornea thickness (c) of an eye (3), especially of a human eye, by means of light waves. First light waves (L1) are emitted onto and into the cornea (4) and second light waves (L3, L4) reflected by the cornea (4) are detected to determine the cornea thickness (c). A contact body (2), preferably with parallel faces, is placed on a contact area (B) of the cornea (4) and the first light waves (L1) are emitted through the contact body (2) and onto and into the cornea (4). The contact body (2) is fastened for example on the cornea (4). The first light waves (L1) are emitted at least in some points in a two-dimensional measuring area (7) of the smoothed area (B) onto and into the cornea (4) and the cornea thickness (c) is determined in one or more sections of the measuring area (7).
IPC 1-7
IPC 8 full level
A61B 3/10 (2006.01)
CPC (source: EP US)
A61B 3/10 (2013.01 - US); A61B 3/1005 (2013.01 - EP US)
Citation (examination)
MUTTI ET AL: "Artifact in optical pachometry with contact lenses in situ", AMERICAN JOURNAL OF OPTOMETRY&PHYSIOLOGICAL OPTICS, vol. 63, no. 10, 1986, pages 847 - 852, XP008016997
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02080760 A1 20021017; AT E269661 T1 20040715; CA 2383951 A1 20021009; DE 50102682 D1 20040729; EP 1284637 A1 20030226; EP 1284637 B1 20040623; JP 2004518517 A 20040624; US 2002171804 A1 20021121; US 6588903 B2 20030708
DOCDB simple family (application)
CH 0100226 W 20010409; AT 01916837 T 20010409; CA 2383951 A 20010409; DE 50102682 T 20010409; EP 01916837 A 20010409; JP 2002578800 A 20010409; US 89520601 A 20010702